The world is treating Obama like another failed American leader.

I've never liked the word diss—not as a verb, much less as a noun. But watching the Obama administration get the diss treatment the world over, week-in, week-out, I'm beginning to see its uses.

Diss: On Sunday, Bloomberg reported that Hasan Rouhani named Hamid Aboutalebi to serve as the ambassador to the United Nations. Mr. Rouhani is the Iranian president the West keeps insisting is a "moderate," mounting evidence to the...